@misc{indiciae5a110a974010,
  title = {Multilevel IRT using dichotomous and polytomous response data.},
  author = {J-P Fox},
  year = {2005},
  doi = {10.1348/000711005x38951},
  url = {https://pubmed.ncbi.nlm.nih.gov/15969844/},
  note = {Source identifier: 15969844}
}